The method of judging the quality of the DC current file (DCA) of the multimeter
Teach you how to judge the quality of the multimeter's DC current file (DCA). If there is a known current source, input it directly in the current file. If not, you can input the voltage in the current file. In addition, some precautions are introduced for your reference.
The method of judging the quality of the DC current file (DCA) of the multimeter
If there is a known current source, input it directly in the current file. If not, just input the voltage in the current gear, if it is 1, dial a gear to the low-range gear until the effective value appears.
Precautions:
1. Please do not input too high voltage, so as to avoid too much current and damage the meter. Commonly used sources that can be input are ordinary batteries, such as No. 5, No. 7, etc.;
2. When measuring the current of the input voltage, because the resistance (load) of the internal resistance of the meter is very small, if the input is too long, the source will be damaged, so try not to exceed 5 seconds for a single input;
3. Each high and low range, the adjacent range, is generally 10 times the relationship.
The above is the method used to judge the quality of the DC current file of the multimeter. A simple one-step operation can determine whether the DC current file of the multimeter is easy to use.
